fseek (MATLAB Function Reference)

Set file position indicator

Syntax

status = fseek(fid,offset,origin)

Description

status = fseek(fid,offset,origin)

repositions the file position indicator in the file with the given fid to the byte with the specified offset relative to origin.

Arguments




fid 

An integer file identifier obtained from fopen.

offset

A value that is interpreted as follows:



offset > 0

Move position indicator offset bytes toward the end of the file.




offset = 0

Do not change position.




offset < 0

Move position indicator offset bytes toward the beginning of the file.


origin

A string whose legal values are:



'bof'

-1: Beginning of file.




'cof'

0: Current position in file.




'eof'

1: End of file.


status

A returned value that is 0 if the fseek operation is successful and -1 if it fails. If an error occurs, use the function ferror to get more information.

`fid`	An integer file identifier obtained from `fopen`.
`offset`	A value that is interpreted as follows:
	`offset > 0`	Move position indicator `offset` bytes toward the end of the file.
	`offset = 0`	Do not change position.
	`offset < 0`	Move position indicator `offset` bytes toward the beginning of the file.
`origin`	A string whose legal values are:
	`'bof'`	-`1:` Beginning of file.
	`'cof'`	`0`: Current position in file.
	`'eof'`	`1`: End of file.
`status`	A returned value that is `0` if the `fseek` operation is successful and -`1` if it fails. If an error occurs, use the function `ferror` to get more information.